Convertible oscillating rotary feeder



April 3, 1928. 1,664,961

L. K. ALDRICH CONVERTIBLE OSCILLATING ROTARY FEEDER Original Filed May 21. 1926 6 Sheets-Sheet 1 A5 0 E E24 20 I 2 o a 7 66" 5-/" I i v 6 Sheets-Sheet 2 L. K. ALDRICH CONVERTIBLE OSCILLATI NG ROTARY FEEDER Original Filed May 21. 1926 April 3, 1928.

6H0: new

April 3, 1928.

L. K. ALDRICH CONVERTIBLE OSCILLATING ROTARY FEEDERv 6 Sheets-Sheet 3 Original Filed May 21. 1926 LJMMM'M,

I attorney April 3, 1928. 1,664,961

L. K. ALDRICH CONVERTIBLE OSCILLATING ROTARY FEEDER Original Filed May 21. 1926 6 Sheets-Sheet 4 April 3, 1926. 1,664,961 v L. K. ALDRICH CONVERTIBLE OSCILLATING ROTARY FEEbER Criminal Filed May 21. 1926 6 Sheets-Sheet 5 Lzmmmm,

April 3, 1 928. 1,664,961

L. K. ALDRCH CONVERTIBLE OSCILLATING ROTARY FEEDER 6 Sheets-Sheet 6 Original Filed May 21. 1926 I i I /z 68 Qwueufoz L/iflzdzw/z,

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firm new Patented Apr. 3, 1928.

UNITED STATE LESTER KYLE ALDRICH, OI! SIDNEY, OHIO.

CONVERTIBLE OSCILLATING ROTARY FEEDER.

Original application filed May 21,

1926, Serial 1%. 110,701.

Divided and this application fled November 5, 1926. Serial No. 146,499.

The invention relates to a convertible oscillating rotary feeder and is a division of an application filed by me May 21, 1926, Serial No. 110,701 which contains claims 6 generic to both arrangements, the claims of the present application relating to the construction and arrangement of the-machine as a feeder of the continuous rotary type.

The object of the present invention is to H) improve the construction of automatic feeders that shown and described in Patent No.

1,546,184, granted to me July 14, 1925 and to-provide a simple, practical and efficient if: automatic feeder of comparatively inexpensive construction capable of operating either as a rotary feeder or as an automatic feeder of the oscillating type with comparatively little change.

"he oscillating type of feeder cannot be run faster than the machine to which it is attached and which it feeds as it is dependent on the mechanical movements of such machine for its operation. The rotary type feeder can be run at variable the advantage over the oscillating type in feeding machines which do not require time, such as buckle folders, perforating and ruling machines and with the shorter length of sheets the feeder can be speeded up to feed the sheets to the full capacity of the ruling machine or other machine to which the 5 sheets are fed.

Another object of the invention is to provide means to thoroughly wind the sheet before attempting to pull it off the stack or pile and also to equip the feeding machine with means for controlling the vacuum separately on winding arms which lift and Wind the sheet, and a pull off nozzle which carries the sheet from the stack or pile to the roll which completes the feeding operation iaso that with light porous stock very little vacuum may be used in picking up the sheet and an additional vacuum may be employed to pull the sheet off the pile after the sheet has been picked up and winded.

he combination feeder makes it possible to provide a feeder that can be attached to any type of machine requiring an automatic feeder.

With these and other'objects in view, the

invention consists in the construction and for sheet material more especially I novel combination and arrangement of parts here1nafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion and minor details of construction, within the scope of the claims, ma be resorted to without departing from tfie spirit or sacrificing any of the advantages of the invention.

In the drawings Figure 1 is a side elevation of a combination automatic feeder constructed in accordance with this invention and shown arranged as a feeder of the oscillating type.

Fig. 2 is a similar view of the opposite side of the machine.

Fig. 3 is a plan view of the same.

Fig. 4 is an enlarged detail longitudinal sectional view of the upper portion of the 75 machine illustrating the arrangement of the winding arms and the pull off nozzle and the cam mechanism for controlling the operation of the same.

Fig. 5 is an enlarged plan view of a portion of the machine.

Fig. 6 is an enlarged detail sectional view of the air valve. I

Fig. 7 is a detail view of one of the pepper box dials or disks for regulating the vent passages.

Fig. 8 nozzle.

Fig. 9 is an edge view of the same.

Fig. 10 is a detail view of one of the winding arms.

I Fig. 11 is a side elevation showing the machine arranged as an automatic feeder of the rotary type. Fig. 12 is a similar upper portion of machine.

in the accompanying drawings in which is illustrated the preferred embodiment of the invention, the combination automatic 10. feeder comprises in its construction a pull off nozzle 1 consisting of a disk adapted to be oscillated when the machine is arranged as a feeder of the oscillating type capable also of being continuously rotated to provide 10$ a feeder of the rotary type. The pull off nozzle is suitably fixed to a rotary shaft 2 journalled in suitable bearings in the sides of the frame 3 of-the machine and provided at one portion of its periphery with an new 110 is a detail side view of the pull off view showing the 96 the opposite side of the ate series of suction mouths 4 for succes si vcly operating on the uppermost'shect 5 of a stack to pull the sheet off the stack and carry the same to a pull ofi' roll 6 and rubber ,cov-

cred spools 7 iwlz' :h are arranged above" the pull off roll and which cooperate with the same to complete the feeding operation and carry the sheet intothe machine with which the automatic feeder is associated as'clearly explained in the; aforesaid patent. The suction months as explained in the aforesaid patent are arranged at regular intervals and are-connected by passages or ducts8 th.

ously rotating and operating as a rotary Feeder. One end of the curved slot is spaced from the arcuate series of ports to provide an intervenin impertorate surface13 which is adapted to close or cover the outlet of the assage 10 during a portion of the movement of the pull of? nozzle while the machine-is operating both as and as a feeder of the oscillating type to cut ofl the suction from the nozzle and throw the full suction on one or more winding arms 14 whichfirst engage the uppermost sheet 5 of the stack and then lift the same, and move the edgeof the sheet backwardly as illustrated in dotted lines in Fig. 4 of the drawings to produce an undulation in the sheet for winding the same in the manner explained in the aforesaid patent and similar to a pressman when winding a sheet by hand. During this winding operation the sheet is lifted and moved from the position illustrated in full lines in Fig. 4 of the drawing to that shown in dotted lines. The pivotal axis of the winding arms as hereinat'ter fullv explained is located a considerable distance above the stack of the sheets to cause the winding arms in their upward movement to move backward simultaneously approximately five-eighths of an inch which is ample to eil'ect the operation of winding the sheet and separating the uppermost sheet from the stack. The winding arms also cooperate with means for discharging compressed air against the stack as fully explained in the aforesaid patent.

The winding arms 11 are suitably mounted on a transverse pivot shaft 15 mounted in suitable bearings in the sides of the frame 3 of the machine-and carrying a cam actuated lever arm 16 and a valve operating arm 17. The winding arm 14 is approxito the transverse' the uppermost sheet of the tcriorly threaded portion of the revolution of the upon a rotary Cam a feeder of the rotary type mately' an d' is secured at; one end pivot'shaft 15 and is provided withfa hollow or tubular-portion 18 arranged approximately the portion which 1s attachcdtothe pivot shaft.- The hollow or.:tubular portion *18;

which forms a passage-(for the am extends 1 downwardly 'and provides at its lower end a suction: mouth which is adapted to'ongage ward edge thereof and-liftthe same as be-- fore explained.

I'HISStIfIl .19 for the reception of a. threaded nipple 20 which formsafliose connection .for

at a right angle to St ck {It thelfo u t The winding *arm is .in-- at the-upp r end of the connecting a fiexiblehoso 21 to each of the winding arms. The cam actuated leverarm :16'which is.

located H at one side-of the'machine adjacent;

to the frame-isprovided'atits outer or oam engaged end w th a roll 22 whichis mounted on a suitable journal23 and which bears journal isupreiferably in the form of a screw threaded into the armltl as indicatedat 24in Fig. 5 of the drawings and the roll grcstsupon the cam 24 at the center of the to thereof as clearly illustrated in Fig. 4 of t 1e drawings and as the winding arms 14 and the" arms 16 and 17 are rigidly securedto the. pivot shaft 15 by screws or other suitable fasten-o ing devices there is suflicient weight to cause the roll to press firmly against the cam and move the cam-actuated lever arm in accordancc with the contour thereof. provided with a 25 forming a cam face for actuating the arm 16 for raising and lowering the winding arms to carry the same to the stack and to lift the uppermost sheet thereof and wind the same. Th peripheral surface of the cam is circular and maintains the winding arm in an elevated position while the pull olfnozzle is operated to pull off the sheet and carry the same to the pull ofi roll and the rubber covered spools.

The arm 17 which operates is located exteriorly of the machine at the opposite side of the air valve frame of the that at which the cam actuated lever arm 16 is arranged sage 29. The valve is preferably arranged in a vertical position as shown sages 28 and 29 are vertical. end of the vertical longitudinal is connected with a main suction a nipple or hose connection 31 and the pas- The lower passage 28 hose 30 by which is v The cam is' cut out portion or recess e remaining portion of the threaded into the lower end of the passage 28 and a suitable hose connection or nipple 32 is threaded into the upper end of the main longitudinal passage 28 and for the attachment of a hose 33 which is connected with the suction nozzle 1 through the passage of the air arm 11. The smaller longitudinal passage 29 has threaded into its upper end a nipple or hose connection 34 which receives a hose 35 extending to one i of the winding arms. The hose 36 extends to the other winding arm and is connected by an L-shaped nipple or hose connector 37 which is threaded at one end into a transverse passage or here 38 extending into the body of the air valve from one face thereof and intersecting the longitudinal passages 28 and 29. The transverse air passage 38 communicates with the longitudinal passage 29 and also with the main longitudinal passage 28. When the suction is on the winding arms through the transverse passage 38 the suction is cut off from the pull off nozzle by the imperforate surface between the arcuate series of ports 9 and the curved slot 12 so that the entire suction will be on the winding arms. The suction which may be made elther light or heavy to suit the character of the stock being fed by the machine is regulated by means of pepper box dials 39 and 40 consisting of disks each provided with a plurality of apertures 41 of different sizes adapted to be brought into register respectively with transverse vent passages 42 and 43 extending from the exterior to the longitudinal passages 28 and 29 as clearly shown in Fig. 6 of the drawings. Each pepper box dial is mounted on. a pivot 44 consisting of a screw which passes through a central opening 45 in the perforated disk which has disposed on it a coiled spring 46 which is interposed between the head of the screw and the outer face of the disk for pressing the same against the body of the air valve. The body of the air valve is provided at the vents 42 and 43 with smooth flat circular faces 47 and 48 to receive the disks which constitute the pepper box dials. The disks are adapted to be rotated to bring any one of its openings into register with the vent passages 42 and 43.

The cut off piston or movable valve member 27 which is cylindrical is mounted in the lower portion of the bore or passage 29 and it is movable from the position illustrated in full lines in Fig. 6 of the drawings to the dotted line 49 in the said figure to close the "iassages leading to the winding arms for cutting off the vacuum from the winding arms to throw the full force of the vacuum into the hose extending from the main longitudinal passage of the air valve to the pull oil nozzle. The cut oil piston is reciprocated in the valve chamber passage 29 of the air valve by the arm 17.

The air arm is provided with a smooth fiat bearing surface to fit against the pull off nozzle and this surface is preferably formed by a wood bushing 50 saturated with oil to form a suction contact member but any other suitable construction may of course be employed. The bushing 50 is mounted in a metal sleeve 51 carrying a nipple or hose connection 52 to which is connected the hose 33 extending from the nipple 32 of the air valve to the air arm. The sleeve 51 provided with a stem 53 and a coiled spring 54 is arranged on the stem at a recess 55 in the end of the bearing arm and is interposedbetween one wall of the recess and the hearing sleeve for yieldably maintaining the wood bushing in contact with the pull off nozzle. The construction of the wood nozzle and the spring actuated sleeve is substantially the same as that shown and described and claimed in an application filed by me February 23, 1926. Serial No. 89,875. The air arm 11 is fixed by a screw or other suitable fastening device to a transverse rod or shaft 56 on which are mounted the arms 57 which carry the rubber covered spools 7 which cooperate with the pull off roll 6. The rubber covered spools are constructed and arranged substantially as shown and described in the aforesaid patent.

The approxin'iately L-shaped valve operating arm 17 is connected to the lower end of the cut off piston by a pin or pivot 58 and it is provided adjacent to the pin or pivot 58 with a laterally extending pin 59 arranged to operate a pivoted valve 60 mounted on the exterior of the valve body and arranged to cover and uncover a port or opening 61 in the air valve. The pivoted valve member 60 consists of a plate having angularly related portions and mounted at its angle on a pivot 62 preferably consisting of a screw as shown and provided at its outer end with a head and having a coiled spring 63interposed between the head of the screw and the movable valve member for creating the necessary pressure to maintain the desired contact between the pivoted valve member and the valve body. One arm or portion of the movable valve body is arranged to cover and uncover the said port or opening 61 and it slides or swings to and from its closed position and its other arm is connected with a crank disk or wheel 6.3 by means of a link 64 pivoted at one end to the crank member or wheel by a wrist pin 65 and provided with a longitudinal slot 66 receiving a pin or pivot 67 mounted on one end of the movable valve member 60. The pin or pivot 67 operates in the slot and the crank element 63 is adapted through the rotation of the cam shaft 2 to move the valve member 60 to its open position for destroying the vacuum and the laterally extending pin of the arm 17 is adapted to engage the movable valve member for actuating the same to move the valve member to its closed position for restoring the vacuum as the arm 17 and the cam-actuated lever arm arrive at their low ermost position to provide the necessary vac-' uum for the winding arms as the latter are lowered to come in contact with the uppermost sheet of the stack. lVhen the laterally extending pin 59 of the arm 17 actuates the 0 pivoted valve member 60 the connecting pin 67 thereof occupies the position in the upper portion of the slot 66 due to the rotation of the crank element 63 and the slot permits the operation of the pivoted valve member by the laterally extending pin of the arm 17. The air valve is also provided with athrottle valve consisting of a port or opening 68 and av pivoted hand operated valve lever 69 pivoted intermediate of its ends on a pin or 0 screw 70 and maintained in proper frictional contact with the valve body by a coiled spring 71. The valve lever 69 is adapted to be operated by hand to cover and uncover the port or opening 68 for destroying and 5 restoring the vacuum so that the feeding of the machine may be stopped and started as required.

The main suction hose 30 is connected with a rotary vacuum pump 72 and the pull ofl nozzle is reversely rotated or oscillated by means of a pinion 73 mounted on a cam shaft and meshing with a rack 74 arranged at the upper end of a vertically reciprocating bar 75 extending to the lower portion of the machine and connectedat its lower end by a suitable pivot with a crank arm 76 of a transverse crank shaft 77 journalled in suitable bearings of the frame of the machine and provided at the opposite side 40 thereof with an upwardly extending crank arm 78 designed to be connected with the mechanism of the press or other machine to be fed by the automatic feeder so that the automatic feeder will operate in conjunction 15 with the said press or other maehineand at the speed thereof. The crankarm 76 extends approximately in a horizontal direction from the shaft 77 and is moved upwardly and downwardlyto reciprocate the 0 rack bar 7Q when the arm 78 is oscillated by the press or other machine.

The stack of sheets is arrangechupon a vertically movable table 79 constructed sub: stantially the same as that shown in the rm aforesaid patent with the exception that the mechanism for elevating the table automatically is operated by an elevating lever 80 fulcrumed intermediate of its ends at 81 and pivotally connected at one end with the rack ith the vertically bar and at the other end w movable bar 82 of the ratchet mechanism. \Vlien the machine is arranged as an oscillating feeder as illustrated in Fig. 1 of the drawings the elevating mechanism and the feeding mechanism are 'actuated by the printing press bed. lever or the mechanism of any other machine to Which the feeder is attached. The link or bar 82 corresponds with the slotted link of the ratchet mechanism of the aforesaid patent and as the particular construction of the ratchet mechanism and the means for mounting and transmitting motion to the vertically movable table 79 are substantially the same as that shown and described in the aforesaid patent, a detail description and illustration of such mechanism in the present application .is deemed unnecessary.

The rotary suction fan 72 is driven by an electric motor 83 which is connected with the rotary suction pump by a. belt 84 and pulleys 85 and 86 but any other suitable means may of course be employed for transmitting motion from the electric motor to the rotary suction fan which as explained in the aforesaid patent discharges into a tank 87 which supplies the compressed air for discharging upon the stack as fully explained in the said patent.

The stack of sheets is arranged on the table between abutments 88 and 89 and as the suction nozzle rotates in the opposite direction to the arrow in Fig. 4 of the drawings the imperforate or dead surface 13 closes the opening in the wood bushing of the air arm as the rotary suction disk nears the limit of its backward movement the cam has lowered the camactuated lever which is attached to the pivot shaft carrying the winding arms and the cut ofl piston arm 17. As the cut off piston arm moved downwardly the pin 59 projecting laterally from the said arm 17 closed the valve 60 covering the exhaust port 61 restoring the full suction on the valve.- The outlet or port at the wood bushing is closed by the llllPt-Bl'fOl'ZttG or dead surface when the suction is on the winding arms. The direction of the rotation of the suction nozzle is now reversed and the suction nozzle moves in the opposite direction, lifting the winding arms which move in a backward direction as they rise to the level of the bottom of the rotary, suction nozzle. When the winding arms have moved upwardly to this point the cut off piston arm 11 5 .17 is also lifted, raising the cut off piston to the dotted line position shown in Fig. 6. The suction nozzle which has been rotating with the cam has arrived at the position where just as the piston cutsofi' the suction from the winding arn'is the first port 0 the arcuate series has come into registc" .with the port or opening in the wood bushing, putting all of the suction'onthe hose extending from the valve to the suction nozzle. As the suction nozzle rotates it pull: the sheet from the pile-and the sheet passes between the pull off roll and the rub- -ber' coverbd spools. As the suction noz'zle reaches the limit of its forward rotation the tated into re eccentric element or disk 63 has pulled upon the valve 60 and uncovered the exhaust port 61 thereby rendering the suction ports inactive on the nozzle as the same rotates backwardly. Also the winding arms are inactive when descending until almost the limit of the downward movement when the said laterally projecting pin 59 closes the valve 60 and restores the vacuum when the winding arms are in position to pick up the next sheet.

To convert the oscillating or reversely rotating feeder into a continuously, rotating feeder the slotted link or connection 64 is removed and the valve 60 is closed. The pinion 73 and the rack bar 75 are then removed and the pinion is replaced by a. pulley 88' or other rotary element and the elevating lever 80 is connected by a linkor connecting rod 89 with a wrist pin 90. The pulley 88 is designed to be operated by a belt but sprocket gearing may of course be employed and the rotation of the sprocket wheel 88 will continuously rotate the suction nozzle or disk in the direction of the arrow in Fig. 4 of the drawings. No change is made in the cut oif piston lever 17.

Referring to Fig. 4 of the drawings which shows the winding arms down ready to pick up the sheet, when the cam is in this position the arm 17 has caused the cut ofi piston to descend and the vacuum is on the winding arms owing to the fact that the rotary suction disk or nozzle has rotated beyond the end of the curved slot and the imperiorate or dead surface 13 closes the outlet or port of the wood bushing. As the winding arms lift the sheet and wind it, the cut off valve closes cutting off the suction from the winding arms and transmitting it to the rotary suction nozzle as the first port has ro- 'ster with the port or outlet of the wood ushing and the sheet is now pulled off the pile by the rotary movement of the suction disk or nozzle and the successive engagement of the suction mouths with the sheets. As the suction disk or nozzle continues to rotate the curved slot 12 comes into register with the port or opening of the wood bushing thereby destroying the vacuum on the air valve and the suction nozzle and winding arms. The rotary suction nozzle or disk continues its rotary movement and the rotation of the cam lowers the winding arms and when they are just at their lowest point the curved slot passes beyond the port or opening of the wood bushing and the vacuum is restored ready to pick up the next sheet. The backward movement caused by the arrangement of the pivot shaft with relation to the stack of sheets produces an undulatory and winding action upon the sheet as the winding arm raises it thereby separating it from the stack and enabling it to be pulled off the same by the operation of the rotary suction nozzle or dlsk. Any suitable means may be employed for rotating the pull off roll and also the rotary element 88 for imparting a continuous rotary movement to the pu ofi nozzle.

What is claimed is:

1. A feeder of the class described including a pull off suction nozzle mounted for rotary movement on a fixed axis and located above and in spaced relation to a stack of sheets, means for continuously rotating the nozzle, and oscillating means consisting of a pivoted suction arm for picking up a sheet and moving the same backward for forming an undulation in the picked up sheet and for delivering the sheet to the pull off nozzle.

2. A feeder of the class described including a suction nozzle mounted on a fixed axis for rotary movement above and in spaced relation with a stack of sheets for advancing a sheet to pull the same from the stack, means for continuously rotating the nozzle,

oscillating means for picking up a sheet andlifting the same to deliver it to the rotary suction nozzle, and separate means for varying the amount of suction on the oscillating means.

3. A feeder of the class described including a pull ofi' nozzle mounted for rotary movement on a fixed axis and located above a stack of sheets and oscillating means for picking up a sheet and delivering the same to the pull off nozzle, means for continuously rotating the nozzle, said oscillating means consisting of a pivoted suction arm being mounted for movement on a fixed axis located above the stack a. suflicient distance to cause a backward movement of the picked up sheet to produce an undulation on the picked up sheet to wind the same.

4. A feeder of the class described including a pull off suction nozzle consisting of a disk mounted for rotary movement on a fixed axis for continuous rotary movement in one direction, means for continuously rotating the nozzle, and an oscillating winding arm pivoted in advance of the pull off nozzle and arranged to pick up a sheet from a stack and move the picked up sheet back ward to wind the same and deliver it to the pull off nozzle.

5. A feeder of the class described including a pull off suction nozzle mounted for rotary movement on a fixed axis, a cam rotating with the pull ofl". nozzle, oscillating means for picking up a sheet from a stack and delivering it to the pull oif nozzle, and an arm connected with the said means and actuated by the cam for oscillating the said means.

6. A feeder of the class described including a pull off suction nozzle mounted for rotary movement on a fixed axis, a cam rotating with the pull off nozzle, an oscillatin winding arm mounted for movement on a fixed axis to pick up a sheet from a stack and wind the picked u sheet and deliver the same to the pull off nozzle, and a lever arm connected with the winding arm and engaged with and actuated by the cam.

7. A feeder of the class described including a rotary pull off suction nozzle, means for continuously rotating the nozzle, an ostary movement on a fixed axis, means for,

continuously rotating the nozzle,an oscillatory suction arm arranged to-pick up a sheet from a stack and deliver it to'the suction nozzle, a fixed air arm having a pull off passage extending to the suction nozzle, means carried by the nozzle forcontrolling-the suction passage of the air. arm, anair valve for controlling the suction of thesuction arm, and means for operating the air valve simultaneously with the suction arm. Y j I 9. A feeder of the class described includ-,

ing a pull off nozzle mounted for rotary movement on a fixed axis, a cam' rotating" with the pull off nozzle, a fixed air arm hava suction passage extending to the pull nozzle, the latter being provided with means for controlling the said suction passage, a pivoted shaft having a lever arm en gaged with the cam, an oscillatory suction arm carried by the pivoted shaft andiarranged to pick up a sheet from a stack and deliver it to the pull off nozzle, an air valve having passages connected with the suction arm and the said air arm and provided with a movable valve member for opening and closing the passage to the suction arm, and

an arm also mounted on the said pivoted shaft and connected with the movable member of the valve for actuatin the same simultaneously with the oscillation'of the suction arm.

10. A feeder of the class described including a rotary pull off nozzle, an oscillatory suction arm arranged to pick up a sheet and deliver it to the rotary pull off nozzle, 3 main suction tube, an air valve connected with the main suction tube and havin passages connected with therotary pull 0 nozzle and with the oscillatory winding arm, sald valve having a cut off piston arran ed to open and close the passage to the suction arm, and an oscillatory arm movable with vided with a plurality of air ports adapted I to be successively brought into communication with one of the passages of the said air valve and a portion of the nozzle being imperforate for cutting off the suction while the suction is on the winding arm.

11. A feeder of the class describedincluding a suction pull ofi' nozzle mounted for rotary movement on a fixed axis provided with a plurality of ports and having an imperforate dead surface adjacent to the said ports, an oscillating suction arm arranged to lift a sheet from a stack and deliver the same to the pull off nozzle, an air valve having passages communicating with the suction arm and witlithe pull off nozzle, said air valve being, provided with a movable member arranged to open and'close the pas- .sage leading to the suction arm, theupassage leading to'the' pul'l-ofl nozzle beingadapted by the rotation of the nozzle to be brought mto communication with 'the. said ports and to be closed-by-.1the imperforate dead surface, and means for'operating the movable valve member for closing the suction to the winding arm when the said orts are in communication with the air va ve'and for o ening the passage to the suction arm-when t e pas sage to the nozzle isclosed bythe 'imperforate surf ace thereof. V,

12 A feeder of the class described including a rotary pull off nozzle mounted for rotary movement ona fixed axis,"a cam rotating with the saidpull ofi' nozzle,'.an oscillatory winding arm arrangedlto pick up 'a sheet from a st'ackand deliver it to the pull off nozzle, a' lever arm connected with the winding arm and arranged. to'be actuated and'controlled by therotation ofthe cam,

and means for imparting a continuous rotary movement to the cam and the pull off nozzle. Y

'13. A feeder of the class described including a rotary pull off nozzle mounted fo'r.ro- .tary movement on a fixed axis, a cam rotat ing with the said pull off nozzle, an.oscillatory winding arm arranged to pick up a sheet from a stack and deliver 'it'to the pull nozzle,a lever'arm' connected with the winding arm and arranged to be actuated and controlledby. the rotation of the cam,

means for imparting a continuous rotary movement tothe cam and the pull off nozzle, an air valve having passageslconnec'ted with the nozzle and the winding arm and pro-. vided with a movable valve member for opening and closing the passage 'to the winding arm, and an oscillating arm connected to the movable valve member and alsowith the lever arm whereby the valve member and the winding ,arm are operated simultaneously.

14. A feeder of the class described including a rotary pull off nozzle mounted for rotary movement on a fixed axis, a cam rotatingwith the said pull off nozzle, an oscillatory winding arm arranged to pick up a sheet from a stack and deliver it to the pull ofi' nozzle, a lever arm connected with the winding arm and arranged to be actuated and controlled by the rotation of the cam, a rotary element connected with the cam and the pull off nozzle for imparting a continuous rotary movement to the same, said rotary element having a wrist pin and an oscillatory lever connected with and actuated by the wrist pin and adapted to impart movement to a table elevatlng mechanism.

15. A feederof the class descrihed'including a suction nozzle mounted on a fixed axis for rotary movement above and in spaced relation with a stack of sheets'for advancing a sheet to pull the same from the stack, means for continuously rotating the nozzle, oscillating means for picking up a sheet and lifting the same to deliver it to the rotary suctionnozzle, and means for varying the amount of suction on the oscillating means independently of the nozzle.

In testimony whereof I afiix my signature.

LESTER KYLE ALDRICH. 

